Frank,
it is not a mill-dot scope and can't be used as one. It can however be used to determine range by measuring an object of a "known" size, what ever the size is, with the hash marks on the crosshairs. They are 2 moa apart vertically and 5 moa apart horizontally. The 5-22 is set to 22X. Determine the size of the object in MOA not mills, Ranging,
If you know the size of the object you want to range,

1.)Divide it by the size in MOA
2.)Multiply by 100 (just add two zeros) and you have the range.

The vertical section of the reticle can be set up in "mil" graduations, after bracketing a 36" target at exactly 100 yards with the bottom portion of the vertical reticle (10 equal sections), I found that "mil" was at 12 power on my scope. This allows me to use the center of the reticle as my 1000 yard zero and 5 mils up (the top hash mark)as my 200 yard zero. 11.5 mils below the center of the reticle is my 1760 yard zero. It is a quick method of establishing a method to shoot extreme long range if one does not have the vertical adjustment available in their scope to shoot extended ranges.

Although the NPR-2 is intended for MOA there is no reason not to do as texas shooter suggested and simply match-up a 3.6 inch target at 100 by adjusting the power-ring and noting the power setting. This would enable mil ranging, but you wouldn't have anything for referencing 1/10's.

It is a good idea to check any variable mil-dot scope with a 3.6" inch target or a "barber pole" as the military uses. Some scopes are slightly "off" at the suggested power setting.

We found for practical purposes that there isn't a big deal whether mil-ing with Marine corps dots or army dots - got pretty much the same readings using 1/10's and the 27.77 costant. Maybe Dave King has a comment on that one.

Like some of the other guys I am kind of stuck on mil-ranging, intend to get familiar with the MOA system.